*1 For details on the detecting distance, see the fiber amplifier catalog.*2 When this product is used in an environment with a consistently high temperature, we recommend a usage temperature of 130°C 266°F or less.*3 Use in a dry state. Also, when using the heat resistant type, make a selection with ample room for the ambient temperature.*4 The minimum detectable object is the value when the detecting distance and sensitivity have been set to their optimal state.